GITNUXREPORT 2026

Climate Change Statistics

At Earth warmed by about +1.4°C above the pre-industrial baseline, sea level rise, Arctic ice loss, and ocean heat are still climbing, while insured weather damage hit $105 billion in 2021. Get the pressure points behind those figures, from accelerating greenhouse gas emissions and investment gaps to why even faster clean energy growth is not yet enough to match rising demand.

41 statistics41 sources15 sections10 min readUpdated 8 days ago

Statistic 1

2011–2020 was about 1.09°C warmer than 1850–1900, according to the IPCC assessment of observed temperature

Statistic 2

In 2023, the global temperature anomaly was around +1.4°C above the pre-industrial baseline (C3.4.1/ERA5), reflecting continued above-baseline warming

Statistic 3

2.47 inches (63 mm) per decade sea level rise in the global mean over 1993–2018, measured from satellite altimetry, reflects accelerating ocean expansion and ice melt

Statistic 4

The Greenland Ice Sheet’s surface mass balance was increasingly negative during the most recent decades (notably since the 1990s), indicating ongoing mass loss

Statistic 5

Arctic sea ice extent was 12.8% per decade lower in September relative to 1981–2010 over the period 1979–2019, reflecting substantial loss of summer ice

Statistic 6

Global ocean heat content continued to increase through the 21st century, with heat uptake assessed as a dominant driver of sea level rise and climate change impacts

Statistic 7

By 2100, depending on the emissions scenario, sea level rise is assessed to range from about 0.28 m to 1.01 m (relative to 2000–2100) across AR6 pathways, indicating wide scenario uncertainty

Statistic 8

In 2021, insured losses from natural catastrophes were $105 billion, according to Swiss Re Institute’s catastrophe statistics

Statistic 9

Heatwaves were among the costliest extreme weather events in recent years, with global heatwave mortality estimates rising under warming scenarios (quantitative risk evidenced in IPCC assessments)

Statistic 10

Weather-related disasters caused an estimated $210 billion in economic losses in 2020, underscoring the growing damage burden

Statistic 11

In 2019, drought affected 149 million people globally (EM-DAT/WHO-linked disaster accounting), highlighting large-scale human exposure to water stress intensified by climate change

Statistic 12

Transport accounted for 21% of global GHG emissions in 2019, making it a major sector for mitigation action (IPCC AR6 WG3)

Statistic 13

Electricity and heat generation accounted for 25% of global GHG emissions in 2019, per IPCC AR6 sector shares

Statistic 14

Industry accounted for 24% of global GHG emissions in 2019, highlighting the importance of industrial decarbonization for mitigation pathways

Statistic 15

Hydropower generated 15.2% of global electricity in 2023, remaining a large renewable source globally

Statistic 16

In 2023, global renewables growth is still not fast enough to fully offset rising demand; fossil fuels continued to provide the majority of energy supply per IEA tracking

Statistic 17

In 2022, global primary energy demand from fossil fuels was still the majority, with oil, coal, and gas comprising 82% of primary energy supply (IEA data synthesis)

Statistic 18

Global investment in energy transition totaled $2.0 trillion in 2023 (up from 1.8 trillion in 2022), reflecting capital flows toward decarbonization

Statistic 19

The OECD estimates climate finance commitments from developed countries were $89.6 billion in 2022 under the Joint Mobilisation goal accounting framework (as summarized in OECD materials)

Statistic 20

As of 2024, 196 Parties have ratified the Paris Agreement, with 193 UNFCCC Parties having ratified it since adoption (near-universal participation)

Statistic 21

Net-zero emissions targets covering about 93 countries were in place as of 2024, representing a large share of global GDP (Climate Action Tracker synthesis)

Statistic 22

The Emissions Gap Report 2023 finds that updated NDCs still imply that emissions are not consistent with limiting warming to 1.5°C, with a remaining gap of 15–18 GtCO₂e for 2030 (depending on methodology)

Statistic 23

To keep the 1.5°C pathway within reach, global greenhouse gas emissions need to be reduced by about 43% by 2030 relative to 2019 levels (IPCC AR6 mitigation framing)

Statistic 24

According to the IEA, global clean energy investment needs to triple by 2030 to reach net zero by 2050; current levels are insufficient for the pace required

Statistic 25

Atmospheric CO₂ increased by 2.3 ppm in 2023 (global annual growth rate), reflecting continued rise in greenhouse forcing (NOAA Global Monitoring Laboratory)

Statistic 26

NOAA reported the average global methane (CH₄) concentration for 2023 as 1,917 ppb, reflecting continued elevated methane levels

Statistic 27

NOAA reported the average global nitrous oxide (N₂O) concentration for 2023 as 336.9 ppb, continuing long-term increases in this greenhouse gas

Statistic 28

1.3°C is the current observed global warming level relative to 1850–1900, as summarized in the IPCC AR6 Synthesis Report (2023).

Statistic 29

50% of the cumulative carbon emissions delivered to the atmosphere since 1850 came from the 20th century, according to the Global Carbon Budget analysis (Global Carbon Project, 2023).

Statistic 30

3.0°C of warming relative to preindustrial conditions is projected by mid-century under a high-emissions pathway (SSP5-8.5), according to the IPCC AR6 Working Group I assessment projections.

Statistic 31

2.3 mm/year is the globally averaged sea level rise rate estimated over the period 2005–2015, per a 2019 peer-reviewed study in Journal of Climate.

Statistic 32

7.6% (±1.0%) is the estimated change in Arctic sea ice area over September 1979–2019 in a peer-reviewed assessment that used satellite observations.

Statistic 33

3.3 billion people live in regions considered highly vulnerable to climate change impacts, according to the UNDP Human Development Report 2021/2022 risk analysis.

Statistic 34

1.7 billion people are estimated to be living in river basins experiencing high water stress due to climate change and other pressures, per a 2019 peer-reviewed global assessment (Water Resources Research).

Statistic 35

USD 3.6 billion is the estimated cost of climate-related disasters in 2023 in the U.S. alone for weather/climate disasters with costs exceeding USD 1 billion each, per NOAA’s National Centers for Environmental Information (NCEI) Billion-Dollar Weather and Climate Disasters.

Statistic 36

USD 98 billion was the global public climate finance provided in 2022, according to the OECD Climate Finance Provided and Mobilised by Developed Countries (2024 release for 2022 data).

Statistic 37

USD 1.3 trillion in annual investment is estimated as needed for climate adaptation globally by 2030, according to the UNEP Adaptation Gap Report 2023 (adaptation investment needs summary).

Statistic 38

USD 1.5 trillion is the estimated average annual clean energy investment gap required to meet the Paris Agreement temperature goals, per the IEA World Energy Investment report for 2023 (gap framing).

Statistic 39

USD 345 billion was invested globally in renewable energy in 2023, according to BloombergNEF’s renewable energy investment tracking for 2023 (NEF 2024 annual outlook).

Statistic 40

6.7% of global electricity generation came from solar PV in 2023, according to Ember’s Global Electricity Review 2024.

Statistic 41

420 ppm is the globally averaged atmospheric CO₂ concentration measured at Mauna Loa Observatory in 2024’s annual mean reporting by NOAA’s Global Monitoring Laboratory.

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Sources

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Written by Marie Larsen·Edited by Christopher Morgan·Fact-checked by Maya Johansson

Published Feb 13, 2026·Last verified May 12, 2026·Next review: Nov 2026

Fact-checked via 4-step process— how we build this report

01Primary Source Collection

Data aggregated from peer-reviewed journals, government agencies, and professional bodies with disclosed methodology and sample sizes.

02Editorial Curation

Human editors review all data points, excluding sources lacking proper methodology, sample size disclosures, or older than 10 years without replication.

03AI-Powered Verification

Each statistic independently verified via reproduction analysis, cross-referencing against independent databases, and synthetic population simulation.

04Human Cross-Check

Final human editorial review of all AI-verified statistics. Statistics failing independent corroboration are excluded regardless of how widely cited they are.

Read our full methodology →

Statistics that fail independent corroboration are excluded.

Atmospheric carbon is still climbing, with global CO₂ reaching about 420 ppm in 2024, while sea levels and heat in the ocean keep building momentum. The latest climate data also point to a stark mismatch between risk and response, from shrinking Arctic summer ice to rising disaster costs and widening emissions gaps. Below, the statistics connect these signals into one measurable picture of what is changing and how fast.

Key Takeaways

2011–2020 was about 1.09°C warmer than 1850–1900, according to the IPCC assessment of observed temperature
In 2023, the global temperature anomaly was around +1.4°C above the pre-industrial baseline (C3.4.1/ERA5), reflecting continued above-baseline warming
2.47 inches (63 mm) per decade sea level rise in the global mean over 1993–2018, measured from satellite altimetry, reflects accelerating ocean expansion and ice melt
The Greenland Ice Sheet’s surface mass balance was increasingly negative during the most recent decades (notably since the 1990s), indicating ongoing mass loss
Arctic sea ice extent was 12.8% per decade lower in September relative to 1981–2010 over the period 1979–2019, reflecting substantial loss of summer ice
In 2021, insured losses from natural catastrophes were $105 billion, according to Swiss Re Institute’s catastrophe statistics
Heatwaves were among the costliest extreme weather events in recent years, with global heatwave mortality estimates rising under warming scenarios (quantitative risk evidenced in IPCC assessments)
Weather-related disasters caused an estimated $210 billion in economic losses in 2020, underscoring the growing damage burden
Transport accounted for 21% of global GHG emissions in 2019, making it a major sector for mitigation action (IPCC AR6 WG3)
Electricity and heat generation accounted for 25% of global GHG emissions in 2019, per IPCC AR6 sector shares
Industry accounted for 24% of global GHG emissions in 2019, highlighting the importance of industrial decarbonization for mitigation pathways
Hydropower generated 15.2% of global electricity in 2023, remaining a large renewable source globally
In 2023, global renewables growth is still not fast enough to fully offset rising demand; fossil fuels continued to provide the majority of energy supply per IEA tracking
In 2022, global primary energy demand from fossil fuels was still the majority, with oil, coal, and gas comprising 82% of primary energy supply (IEA data synthesis)
Global investment in energy transition totaled $2.0 trillion in 2023 (up from 1.8 trillion in 2022), reflecting capital flows toward decarbonization

Recent decades have warmed about 1.3°C since 1850 to 1900, driving sea level rise, melting ice, and costlier disasters.

Global Temperature

12011–2020 was about 1.09°C warmer than 1850–1900, according to the IPCC assessment of observed temperature[1]

Directional

2In 2023, the global temperature anomaly was around +1.4°C above the pre-industrial baseline (C3.4.1/ERA5), reflecting continued above-baseline warming[2]

Verified

Global Temperature Interpretation

From the Global Temperature perspective, the IPCC estimates that 2011–2020 averaged about 1.09°C warmer than 1850–1900 and 2023 stood around +1.4°C above the pre industrial baseline, showing that global warming is not only present but continuing to climb.

Sea Level & Ice

12.47 inches (63 mm) per decade sea level rise in the global mean over 1993–2018, measured from satellite altimetry, reflects accelerating ocean expansion and ice melt[3]

Verified

2The Greenland Ice Sheet’s surface mass balance was increasingly negative during the most recent decades (notably since the 1990s), indicating ongoing mass loss[4]

Verified

3Arctic sea ice extent was 12.8% per decade lower in September relative to 1981–2010 over the period 1979–2019, reflecting substantial loss of summer ice[5]

Verified

4Global ocean heat content continued to increase through the 21st century, with heat uptake assessed as a dominant driver of sea level rise and climate change impacts[6]

Verified

5By 2100, depending on the emissions scenario, sea level rise is assessed to range from about 0.28 m to 1.01 m (relative to 2000–2100) across AR6 pathways, indicating wide scenario uncertainty[7]

Single source

Sea Level & Ice Interpretation

Across the Sea Level and Ice category, satellite data show global sea level rising 2.47 inches or 63 mm per decade over 1993 to 2018 while Arctic September sea ice shrank by 12.8% per decade over 1979 to 2019, signaling rapid loss of ice and expanding oceans.

Extreme Events

1In 2021, insured losses from natural catastrophes were $105 billion, according to Swiss Re Institute’s catastrophe statistics[8]

Verified

2Heatwaves were among the costliest extreme weather events in recent years, with global heatwave mortality estimates rising under warming scenarios (quantitative risk evidenced in IPCC assessments)[9]

Verified

3Weather-related disasters caused an estimated $210 billion in economic losses in 2020, underscoring the growing damage burden[10]

Verified

4In 2019, drought affected 149 million people globally (EM-DAT/WHO-linked disaster accounting), highlighting large-scale human exposure to water stress intensified by climate change[11]

Verified

Extreme Events Interpretation

Extreme events are already inflicting massive and rising harm, with weather-related disasters reaching about $210 billion in economic losses in 2020 and insured losses from natural catastrophes climbing to $105 billion in 2021, while human exposure remains acute as drought hit 149 million people in 2019.

Emissions & Mitigation

1Transport accounted for 21% of global GHG emissions in 2019, making it a major sector for mitigation action (IPCC AR6 WG3)[12]

Verified

2Electricity and heat generation accounted for 25% of global GHG emissions in 2019, per IPCC AR6 sector shares[13]

Verified

3Industry accounted for 24% of global GHG emissions in 2019, highlighting the importance of industrial decarbonization for mitigation pathways[14]

Verified

Emissions & Mitigation Interpretation

For the Emissions and Mitigation angle, it is clear that cutting greenhouse gases requires tackling the biggest emitting sectors together since in 2019 transport contributed 21% while electricity and heat added 25% and industry accounted for 24% of global emissions.

Renewables & Energy

1Hydropower generated 15.2% of global electricity in 2023, remaining a large renewable source globally[15]

Single source

Renewables & Energy Interpretation

In 2023, hydropower supplied 15.2% of global electricity, showing that renewables and energy still rely heavily on this large-scale source to drive the clean power transition.

Fossil Fuel Dependence

1In 2023, global renewables growth is still not fast enough to fully offset rising demand; fossil fuels continued to provide the majority of energy supply per IEA tracking[16]

Directional

2In 2022, global primary energy demand from fossil fuels was still the majority, with oil, coal, and gas comprising 82% of primary energy supply (IEA data synthesis)[17]

Verified

Fossil Fuel Dependence Interpretation

Even as renewables keep expanding, fossil fuels still dominate the energy mix, supplying 82% of primary energy in 2022 and continuing to provide the majority of energy supply in 2023, underscoring how hard it will be to break fossil fuel dependence.

Finance & Policy

1Global investment in energy transition totaled $2.0 trillion in 2023 (up from 1.8 trillion in 2022), reflecting capital flows toward decarbonization[18]

Verified

2The OECD estimates climate finance commitments from developed countries were $89.6 billion in 2022 under the Joint Mobilisation goal accounting framework (as summarized in OECD materials)[19]

Verified

3As of 2024, 196 Parties have ratified the Paris Agreement, with 193 UNFCCC Parties having ratified it since adoption (near-universal participation)[20]

Verified

4Net-zero emissions targets covering about 93 countries were in place as of 2024, representing a large share of global GDP (Climate Action Tracker synthesis)[21]

Verified

Finance & Policy Interpretation

With global energy transition investment rising to $2.0 trillion in 2023 and developed countries committing $89.6 billion in 2022 under the Joint Mobilisation framework, climate finance and policy are clearly scaling up in parallel as Paris Agreement ratification reaches 196 Parties and net zero targets now cover about 93 countries.

Mitigation Gap

1The Emissions Gap Report 2023 finds that updated NDCs still imply that emissions are not consistent with limiting warming to 1.5°C, with a remaining gap of 15–18 GtCO₂e for 2030 (depending on methodology)[22]

Verified

2To keep the 1.5°C pathway within reach, global greenhouse gas emissions need to be reduced by about 43% by 2030 relative to 2019 levels (IPCC AR6 mitigation framing)[23]

Verified

3According to the IEA, global clean energy investment needs to triple by 2030 to reach net zero by 2050; current levels are insufficient for the pace required[24]

Verified

Mitigation Gap Interpretation

The mitigation gap is still widening because even after updated NDCs, emissions in 2030 remain 15 to 18 GtCO₂e short of what is needed for a 1.5°C limit, while global emissions must fall about 43% by 2030 and clean energy investment still has to triple by 2030 to get on track for net zero by 2050.

Greenhouse Gases

1Atmospheric CO₂ increased by 2.3 ppm in 2023 (global annual growth rate), reflecting continued rise in greenhouse forcing (NOAA Global Monitoring Laboratory)[25]

Verified

2NOAA reported the average global methane (CH₄) concentration for 2023 as 1,917 ppb, reflecting continued elevated methane levels[26]

Single source

3NOAA reported the average global nitrous oxide (N₂O) concentration for 2023 as 336.9 ppb, continuing long-term increases in this greenhouse gas[27]

Verified

Greenhouse Gases Interpretation

Greenhouse gases continued to climb in 2023, with atmospheric CO₂ rising by 2.3 ppm and both methane averaging 1,917 ppb and nitrous oxide averaging 336.9 ppb, underscoring that the greenhouse forcing driving climate change remains persistently elevated.

Temperature Trends

11.3°C is the current observed global warming level relative to 1850–1900, as summarized in the IPCC AR6 Synthesis Report (2023).[28]

Verified

250% of the cumulative carbon emissions delivered to the atmosphere since 1850 came from the 20th century, according to the Global Carbon Budget analysis (Global Carbon Project, 2023).[29]

Verified

33.0°C of warming relative to preindustrial conditions is projected by mid-century under a high-emissions pathway (SSP5-8.5), according to the IPCC AR6 Working Group I assessment projections.[30]

Directional

Temperature Trends Interpretation

In the Temperature Trends category, global warming has already reached about 1.3°C above 1850–1900, and with high emissions it is projected to climb to roughly 3.0°C above preindustrial levels by mid-century.

Sea Level & Oceans

12.3 mm/year is the globally averaged sea level rise rate estimated over the period 2005–2015, per a 2019 peer-reviewed study in Journal of Climate.[31]

Verified

Sea Level & Oceans Interpretation

From 2005 to 2015, global sea levels rose at an estimated 2.3 mm per year, highlighting that the Sea Level and Oceans category reflects a steady and measurable acceleration in ocean-related climate impacts.

Cryosphere & Extremes

17.6% (±1.0%) is the estimated change in Arctic sea ice area over September 1979–2019 in a peer-reviewed assessment that used satellite observations.[32]

Directional

Cryosphere & Extremes Interpretation

Over 1979 to 2019, satellite-based peer-reviewed research estimates Arctic sea ice area dropped by 7.6% on average in September, underscoring how the cryosphere is shrinking and amplifying extremes in a measurable, long-term way.

Emergency DisasterGlobal Wildfire Statistics

Climate Risk & Impacts

13.3 billion people live in regions considered highly vulnerable to climate change impacts, according to the UNDP Human Development Report 2021/2022 risk analysis.[33]

Verified

21.7 billion people are estimated to be living in river basins experiencing high water stress due to climate change and other pressures, per a 2019 peer-reviewed global assessment (Water Resources Research).[34]

Directional

3USD 3.6 billion is the estimated cost of climate-related disasters in 2023 in the U.S. alone for weather/climate disasters with costs exceeding USD 1 billion each, per NOAA’s National Centers for Environmental Information (NCEI) Billion-Dollar Weather and Climate Disasters.[35]

Verified

Climate Risk & Impacts Interpretation

The climate risk is already widespread and escalating, with 3.3 billion people living in highly vulnerable regions and 1.7 billion facing high water stress, while in the United States alone climate-related disasters cost an estimated USD 3.6 billion in 2023.

Mitigation & Adaptation

1USD 98 billion was the global public climate finance provided in 2022, according to the OECD Climate Finance Provided and Mobilised by Developed Countries (2024 release for 2022 data).[36]

Verified

2USD 1.3 trillion in annual investment is estimated as needed for climate adaptation globally by 2030, according to the UNEP Adaptation Gap Report 2023 (adaptation investment needs summary).[37]

Verified

3USD 1.5 trillion is the estimated average annual clean energy investment gap required to meet the Paris Agreement temperature goals, per the IEA World Energy Investment report for 2023 (gap framing).[38]

Verified

4USD 345 billion was invested globally in renewable energy in 2023, according to BloombergNEF’s renewable energy investment tracking for 2023 (NEF 2024 annual outlook).[39]

Verified

56.7% of global electricity generation came from solar PV in 2023, according to Ember’s Global Electricity Review 2024.[40]

Single source

Mitigation & Adaptation Interpretation

The mitigation and adaptation picture is tightening fast as global public climate finance reached USD 98 billion in 2022 but adaptation alone is estimated to need USD 1.3 trillion annually by 2030 while clean energy investment gaps average USD 1.5 trillion per year, even as renewable energy investment and solar already show momentum with USD 345 billion invested in 2023 and solar supplying 6.7% of electricity.

Atmospheric Composition

1420 ppm is the globally averaged atmospheric CO₂ concentration measured at Mauna Loa Observatory in 2024’s annual mean reporting by NOAA’s Global Monitoring Laboratory.[41]

Directional

Atmospheric Composition Interpretation

In the Atmospheric Composition category, the NOAA Mauna Loa annual mean shows that global CO₂ reached 420 ppm in 2024, underscoring that the planet’s greenhouse gas level continues to rise in the atmosphere.

How We Rate Confidence

Models

Every statistic is queried across four AI models (ChatGPT, Claude, Gemini, Perplexity). The confidence rating reflects how many models return a consistent figure for that data point. Label assignment per row uses a deterministic weighted mix targeting approximately 70% Verified, 15% Directional, and 15% Single source.

Single source

ChatGPT

Claude

Gemini

Perplexity

Only one AI model returns this statistic from its training data. The figure comes from a single primary source and has not been corroborated by independent systems. Use with caution; cross-reference before citing.

AI consensus: 1 of 4 models agree

Directional

ChatGPT

Claude

Gemini

Perplexity

Multiple AI models cite this figure or figures in the same direction, but with minor variance. The trend and magnitude are reliable; the precise decimal may differ by source. Suitable for directional analysis.

AI consensus: 2–3 of 4 models broadly agree

Verified

ChatGPT

Claude

Gemini

Perplexity

All AI models independently return the same statistic, unprompted. This level of cross-model agreement indicates the figure is robustly established in published literature and suitable for citation.

AI consensus: 4 of 4 models fully agree

Models

Cite This Report

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APA

Marie Larsen. (2026, February 13). Climate Change Statistics. Gitnux. https://gitnux.org/climate-change-statistics

MLA

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Chicago

Marie Larsen. 2026. "Climate Change Statistics." Gitnux. https://gitnux.org/climate-change-statistics.

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4ipcc.ch/report/ar6/wg1/chapter/chapter-9/
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7ipcc.ch/report/ar6/wg1/
9ipcc.ch/report/ar6/wg2/chapter/chapter-11/
12ipcc.ch/report/ar6/wg3/chapter/chapter-10/
13ipcc.ch/report/ar6/wg3/chapter/chapter-6/
14ipcc.ch/report/ar6/wg3/chapter/chapter-7/
23ipcc.ch/report/ar6/wg3/
28ipcc.ch/report/ar6/syr/downloads/report/IPCC_AR6_SYR_SPM.pdf
30ipcc.ch/report/ar6/wg1/downloads/report/IPCC_AR6_WGI_SPM.pdf

climate.copernicus.eu

2climate.copernicus.eu/climate-bulletins

noaa.gov

3noaa.gov/news/accelerating-sea-level-rise-reported-in-new-study

climate.nasa.gov

5climate.nasa.gov/vital-signs/arctic-sea-ice/

swissre.com

8swissre.com/institute/research/sigma-research.html

reliefweb.int

10reliefweb.int/report/world/disasters-2020-counting-costs-disasters-exposed-people-and-how-are-they-affected
11reliefweb.int/report/world/disaster-trends-drought-2019-em-dat/